And edward s



(No Model.) 2 ShGBtS-Sh8fi l.

G. E. TAPT, Deod C. A. TAFT and E. S. CLARK, 'Executors.

GARDING MACHINE.

No. 410,864, Patented Sept. 10, 1889.

INVENZ'UE;

WJTNISEEE I zmw z 2 2 SheetsSheet 2.

G. E. TAFT, Decd.

(No Model.)

0. A. TAFT and E. S. CLARK, Executors; GARDING MACHINE. No. 410,864.Patented Sept. 10, 1889.

WITNISEIE.

UNITED STATES CYRUS A. TA-FT, OF \VHITINSVILLE, CLARIQOF PROVIDENCE,RHODE E. TAFT, DECEASED.

PATENT OFFICE.

MASSACHUSETTS, AND EDIVARD S. ISLAND, EXECUTORS OF GUSTAVUSCARDlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 410,864, datedSeptember 10, 1889.

Application filed January 4, 1889.

To all whom it may concern.-

Be it known that GUSTAVUS E. TAFT, dc ceased, late of Northbridge, inthe county of' \Vorcester and State of Massachusetts, did invent certainnew and useful Improvements in Carding-lVIachines,of which the followingis a full, clear, and exact description, reference being had to theaccompanying draw-I ings, forming part of this specification.

This invention has reference to an improvement in machines for cardingcotton or other fibrous material.

The object of the invention is to protect the large or main cylinder ofa carding-engine against air-drafts.

In carding-engines the speed at which the main cylinder revolves causesa constant indraft and outdraft of air. When these airdrafts areintelligently controlled, they can be utilized to facilitatethe cleaningand cardin g of the fiber. The aim in the modern carding-engine is to socontrol the air-drafts and utilize the same. The ends of the maincylinder of a carding-engine when in operation, no matter how smooththeir surfaces maybe, act on the air in contact with the same to drivethe air outward from their periphery by centrifugal force and draw theair inward at their center by the partial vacuum created by the outwardmotion of the air. The airdrafts thus generated drive the fiber from theedge of the cylinder toward the center and prevent the even working overthe whole width of the cylinder. For the purpose of preventing theseair-drafts a shield or cover is provided for the ends of the maincylinde r, as will be more fully set forth hereinafter.

Figure 1 is a view of the shield or escutcheon, also showing theshaft-bearing of the cardingcylinder. Fig. 2 is a sectional view showingthe end of the main carding-cylinder and the shield or escutcheon inconnection therewith. Fig. 3 is a sectional view of the stay-bolt bywhich the shield is secured'to the card side or frame and adjusted withreference to the carding-cylinder. Fig. 4 is a view of the card side orframe, showing the position of the stay-bolts and the segment coveringthe space Serial No. 295,469. (No model.)

' between the cylinder and the top-flats-of the the maincarding-cylinder of a carding-engine;

Z], the bearing of the same; 0, the end or head of the carding-cylinder;d, the shield or escutcheon.

The carding-cylinder is shown as provided with the projecting flange eon its periphery and the shield with the flange f. These flanges Iprefer to turn true, so that one fits ornearly fits to the other and theoutlet of air is prevented. In place of the flange e on the cylinder agroove may be formed in the head near the periphery, and the flange ffitted to enter the groove in the head 0. The flange f may be square,V-shaped, or of any other suitable section, and instead of forming thejoint between the cylinder and the shield at the extreme outer edge ofthe cylinder a joint tight enough to prevent the outrush of air may beplaced some distance from the periphery of the cylinder without changingthe effect of the invention. At the center the shield should be made toclosely fit the shaft or the bearing, so that no air can rush in at thisjoint, for if no air can enter near the center no air can be drawn offfrom the peripheryafter the cylinder has been for even a short time inmotion.

For the purpose of firmly securing the shield and adjusting the same anymechanical device may be used. As it is, however, desirable to secureand adjust the shield or escutcheon with great nicety to the cylinder,

a special device has been designed by which the shield can be securedand accurately adj usted from the outside of the carding-engine,consisting of the stay-bolt Z. Referring again to the drawings, 2'indicates the card side or frame, and k the arch of the card side orframe. Three stay-bolts Z are shown in Fig. 4--two in the arch k and onein the frame 1'. These stay-bolts may,however,be distributed 5otherwise, and more than three may be used.

Referring to Fig. 3, it will be seen that the stay-bolt Z is threadedand enters the screwthreaded hole in the shield or escutcheon d, whichat the places where the bolt enters is provided with a boss to securegreater thickness and length of screw-thread. The bolt l passes throughthe cylindrical sleeve m, screwthreaded in the card side or frame 1 Thebolt land the screw-threaded sleeve on are each provided with a head, sothat they can be readily turned with awrench. The washer n is placedbetween the head of the bolt land the head of the sleeve on. The sleevem can be turned in or out to form a support at any given point for theshield d, and by turning the bolt Z the shield is drawn against the endof the sleeve m and is firmly held. By this arrangement the shield canbe adjusted to the cylinder with great nicety.

The shield or escutcheon d may be provided with the projecting section hto cover the space between the carding-cylinder and the top-flats 0.(Shown in Fig. 4.)

It is preferred to make the shield or escutcheon of metal; but any othersuitable material may be used.

To stiffen the shield, it may be provided with light ribs, or thesurface may be corrugated, or the radial concaved figures 9 may beformed on one side of the same, as shown in the drawings.

Both ends of the cardingbylinder are to be provided with a shield, as isshown in Fig. 2 applied to one end.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is-

1. The combination, with the frame of a carding-engine, the maincarding-cylinder, and a shield or escutcheon, substantially asdescribed, of a fastening and adjusting device consisting of a threadedsleeve adjustably secured in the frame and a bolt constructed to holdthe shield against the sleeve, as described.

2. The combination, with the frame of a carding-engine and thecarding-cylinder, of r the thread ed sleeve m, the shield d, andscrewbolt 1, constructed to secure and adjust the shield, as described.

In witness whereof we have hereunto set our hands.

CYRUS A. TAFT, EDlVD. S. CLARK, Erccators of H10 estate of Gus/anus E.Taft,

deceased.

\Vituesses:

J. A. MILLER, J r., M. F. BLIGH.

